1½ cups chocolate sandwich cookie crumbs
3 (3 ounce) packages cream cheese, softened
1 (14 ounce) can sweetened condensed milk
2 teaspoons vanilla
1 cup semisweet chocolate chips, divided
Combine cookie crumbs and butter; press into 9-inch springform pan. Beat cream cheese until fluffy, then beat in milk, vanilla, and eggs. Toss ½ cup chocolate chips with flour to coat; stir into cream cheese mixture. Pour into prepared pan and sprinkle with remaining chips. Bake at 300 degrees for 1 hour or until cake springs back when lightly touched. Cool. Chill. Serve.